CMT/LTC Seminars

How mesoscopic quantum thermal machines can generate resources for Quantum Information Processing

by Dr Géraldine Haack (Univ. Genève)




Minimal models for quantum thermal machines are central to understand energy exchanges at the quantum scale and the intimate connection between quantum thermodynamics and quantum information theory. In particular, one would like to determine whether quantum features, like entanglement, interactions and quantum statistics, can be beneficial to the efficiency of a thermal machine made of few quantum constituents. This research direction becomes even more fascinating with the demonstration that thermal resources can be used to generate quantum correlations for QIP tasks. In this talk, I will discuss some of our latest results for creating genuine multipartite entangled states (GHZ-, W-, cluster-states) from quantum thermal machines fueled by thermal resources only and discuss limitations. Their behavior in the steady state regime will be analyzed. At the end of the talk, I will also present recent results motivated by their dynamics in the transient regime. This will allow me to discuss the presence of exceptional points in these (non-Hermitian) open quantum systems and how they can be exploited as a new type of quantum control towards entanglement generation.


Main references:

Tavakoli et al., PRA 101 (2020);

Tavakoli et al., Quantum 6 (2022).

Khandelwal et al., PRX Quantum 2 (2021)


Organized by

Laboratory for Theoretical and Computational Physics
Dr. Markus Müller

Host: Dr. Markus Müller